Centrifugal creamer



(No Model.)

P. HART. GENTRIFUGAL GREAMER.

No. 436.418. Patented sept. 16,1890.

.J L I m: Noam rs1-sns cn.. immuun-404, msnmavnn, m c.

UNITED STATES PATENT OFFICE.

FREDERICK HART, OF

POUGHKEEPSIE, ASSIGNOR TO D. II. BURRELL & OO., OF LITTLE FALLS, NEW YORK.

CENTRIFUGAL CREAMER.

SPECIFICATION forming part of Letters Patent No. 436,418, dated September 16, 1890.

Application tied rebrfiay 21, 1888. seria No. 264,756. (No model.)

To all whom it may concern.-

Beit known that I, FREDERICK HART, of Poughkeepsie, in the county of Dutchess and State of New York, have invented new and useful Improvements in Centrifugal Creamers, of which the following is a specilication.

My invention relates to that class of centrifugal separators which are provided with imperforate drums or bowls, and which are used for separating compound liquids into their constituent liquids of different specific gravities. As these machines are most generally employed for separating full-milk into cream and skim-milk, my improved machine will be hereinafter described with reference to its use as a centrifugal creamer.

The object of my invention is to improve the construction of the parts by which the drum is rotated so as to render such parts self-oiling, dust-proof, and self-adjusting to slight variations in the drum or load; also, to improve the construction of the drum so as to increase its separating capacity and to ren` der the separation more thorough and complete.

My invention consists of the improvements which will be hereinafter fully set forth, and pointed out in the claims.

In the accompanying drawings, Figure lis a vertical section of a centrifugal Creamer provided with my improvements. Fig. 2 is a horizontal section in line o; x, Fig. l. Fig. 3 is a horizontal section in line y y, Fig. l. Fig. 4 is a horizontal section through the receiving-cup in line .c c, Fig. 1. Fig. 5 is a horizontal section through the receiving-cup in line w fw, Fig. l. Fig. 6 is a horizontal section through the spindle and standard. Fig. 7 is a fragmentary top plan view of the drum. Fig. 8 is a vertical section in line oc or, Fig. 3. Fig. 9 is a fragmentary section in line y y, Fig. 3, on an enlarged scale.

Like letters of reference refer to like parts in the several iigures.

A represents the base or bed plate of the machine provided with a depending central hub or socket a, to the lower end of which is secured a plate a', having a central open ing a2.

B is a vertical hollow standard secured with its lower end centrally in the base-plate A.

The lower end of the standard is provided with a liange which rests upon the plate a', and the cavity of the socket a is lled with an elastic cushion l), of india-rubber or other suitable material, which fits snugly around the lower portion of 'the standard. The upper portion of the socket c. is provided with an inwardly-projecting collar b', which fits snugly around the standard B. The elastic cushion b holds the standard securely in an upright position and at the same time permits the standard to yield slightly and adapt itself` to any slight lateral movement of the parts resting on the standard.

C represents a hollow spindle, lwhich rests upon the hollow standard and extends downwardly over the standard nearly to the baseplate A. Suitable perforated washers c are interposed between the top of the spindle vC and the top of the standard B.

O represents the belt-pulley formed on the spindle C, near the lower end thereof.

c represents a bearing sleeve secured within the upper portion of the spindle C and turning on the standard B, and c2 is a similar bearing-sleeve secured within the lower portion of the spindle C. The lower bearing c2 is provided with a flange c3, which projects into an internal annular grgove c4, formed in the socket ct of the base above the collar b thereof.

D is an annular oil-guard secured to the upper side of the socket ct and projecting in- Y wardgly over the ange c3 of the lower bearing c E E represent hollow posts secured to the base-plate A. on diametricaIly-opposite sides of the central standard B. The post E is provided with an internal oil-tube e, which aseends within the post to a level 'slightly above the top of the standard B.

e represents an oil-cup secured to the post E and communicating with the interior of the post E, below the top of the oil-pipe e.

c2 is a pipe connecting the lower end of the pipe e with the annular groove c4, and es is a' pipe which establishes communication be'V tween the lower end of the bore of the standard B with the hollow boss e4, in which the hollow standard B is secured. The cavities of the post E and connecting parts are filled with oil through the oil-cup e to the level of the oil-cup, so that the oil stands in the hollow standard B in contact with the washers '0. The rotation of the spindle C upon the standard B causes the oil to flow outwardly from the top of the standard B, between the rings c, downwardly between the standard and the spindle C, and into the annular groove c4, in which it is acted upon by the rotating flange c3, which drives the oil outwardly and through the pipe e2 and upwardly through the pipe c within the post E. rlhe oil flows over the top of the pipe e, descends in the post E, and returns to the lower end of the hollow stan dard B through the pipe e3, thus maintaining a continuous circulation of the oil while the machine is running, and excluding dust, dto., from the bearing-surfaces. The cavity of the annular guard D holds the surplus oil when the machine is at rest. The collar b of the base fits against the standard so snugly as to prevent the oil from descendingl to the elastic ring b. The return-pipe e3 is preferably coiled or bent to render it sufficiently yielding to follow the slight lateral movement of the lower end of the standard, which occurs when the standard adapts itself to the rotating parts above.

F represents the bowl or drum mounted upon the spindle C; f, the peripheral wall of the drum; f', the annular top plate thereof; f2, the bottom plate, and f a the raised hub form ed centrally on the bottom plate f2.

g is a spherical knuckle formed at the upper end of the spindle C, and g is a spherical socket formed in the apex of the hub f3 and resting on the knuckle g. The drum is rotated by the friction. between this knuckle and socket, and is free to oscillate to a limited extent on this spherical joint.

H represents the cup which receives the full-milk from a pipe h, and which is secured to the upper side of the apex of the hub f3. The interior space of the cup H is composed of a cavity t', which is preferably constructed with a convex bottom, and slightly iiaring upwardly part of the Way, and an annular groove or gutter t" formed at the upper end of the cavity t', and made of greaterl diameter than the latter. The gutter opens inwardly and receives the milk which flows upwardly on the sides of the cavity z'. The gutter i is divided into two semicircular parts by two vertical partition-plates jj', arranged diametrically opposite each other, or is otherwise composed of two compartments, each of which receives the full milk to be separated.

7c lo represent two discharge-pipes through which the milk escapes from the compartments of the gutter t", -and which are arranged on opposite sides of the partition j', as represented in the drawings. These pipes la lo communicate with somewhat larger pipes K K', which descend over the hub f3 and open on the bottom of the drum on opposite sides of the vertical blade L, which is secured in the drum in the usual manner for the purpose of compelling the liquid to rotate with the drum.

Z represents the cream-discharge pipe arranged at the upper end of the blade L, and

tant from the center of the drum, and are separated by a partition-wall n2, which has its inner end arranged farther from the center of the drum than the inner ends of the outer walls of the branches.

O isa plug which is arranged at the inner end of the partition-wall n2, and which is flattened on one side, so that by turning this plug the operative length of the partition-wall can be increased or reduced in such manner as to adj ust it toward and from the center of the drum. This plug extends upwardly through the top plate of the drum, and has its upper end slotted to receive a screw-driver. The skim-milk enters the outer end of the short leg u of the discharge-pipe, flows inwardly through the same, passes around the plug O,

and thence flows outwardly through the long leg n of the dischargepipe and escapes through an openingp in the peripheral wall of the drum into an annular receiver P, which is arranged below the receiver M. The branches fn n extend inwardly beyond the inner line of the liquid, so that no liquid can enter the discharge-pipe except through the outer end of the short branch n. By adjusting the plug so as to locate the edge, around which the skim-milk iiows, farther from or nearer to the axis of the drum the relative iiow of skimmilk and cream from the machine can be regulated.

The full-milk, which is fed into the receiving-cup H, falls on the convex bottom thereof, spreads equally around the revolving cup, rises in a vertical wall along the sides of the cup, and Hows over into the compartments of the annular gutter i', each of which receives an equal volume of the milk. The cavity i being depressed below the gutter 1l prevents splashing of the milk as it enters the cup. The milk escapes from the gutter in equal streams through the pipes lo 7c K Ki and passes into the drum, one half to one side and the other half to the other side of the blade L. The movement of the milk while subjected to the separating action of the rotating drum is upwardly from the bottom to the top of the The two branches are open at their inner ends, which are equidis IOO IIO

' and without holding the milk in thedrum so long as to produce improper effects upon the separated cream.

I claim as my invention l. The combination, with the base of a supporting-standard secured with its lower portion on said base and having its upper portion unsupported, of a hollow driving-spindle surrounding the standard and extending above the top thereof, and a separating-drum resting upon the head of the spindle, substantially as set forth.

2. The combination, with the base of a supporting-standard secured with its lower portionon said base and having its upper por-V tion unsupported, of a hollow driving-spindle surrounding the standard and provided above the latter with a spherical knuckle, and a separating-drum provided with a spherical socket resting on said knuckle, substantially as set forth.

3. The combination, with the separatingdrum provided on one side of its aXis with an internal blade and on the opposite side with the exit for the heavy separated liquid, of two supply-conduits opening into the drum adjacent to said internal blade, and on opposite sides thereof, whereby the liquid to be separated is introduced into the drum in two streams on opposite sides of said blade, each of which streams moves around one-half of the drum before reaching the eXit for the heavy liquid,lsubstantially as set forth.

4. The combination, with a separatingdrum provided on one side of its axis with an internal blade and on the opposite side with an exit for the heavy separated liquid, of a receiving-cup secured within the drum and composed of two compartments, and discharge-conduits leading from said cup into the drum on opposite sides of said blade, substantially as set forth.

5. The combination, with the separatingdrum, of an internal receiving-cup composed of two compartments, and separate dischargeconduits leadingfrom each compartment into the drum, substantially as set forth.

6. The combination, with the separatingdrum, of an internal receiving-cup provided with a cavity t', and an annular gutter i', arranged at the upper end of said cavity and opening` inwardly, substantially as set forth.

7. The combination, with the separatingdrum, of an internal receiving-cup provided with an annular gutter t', divided into compartments by partitions j j', arranged in said gutter, substantially as set forth.

8. The combination, with the separatingdrum provided on diametrically opposite sides with an internal blade L and an exit for the heavy separated liquid, of a receivingcup provided with an annular gutter Q1', separated into compartments by partitions jj', and conduits lc la K K', leading from said compartments into the drum on opposite sides of the blade L, substantially as set forth.

9. The combination, with the separatingdrum, of a discharge-pipe composed of a short receiving branch and a long discharge branch, both open at their inner ends, and an adjustable piece arranged at the junction of the two branches, whereby the operative length of the pipe can be adjusted, substantially as set forth.

10. The combination, with the separatingdrum, of a discharge-pipe N, composed of a short branch n', a long discharge branch n, and an adjustable flattened plug O, arranged at the junction of the two branches, substantially as set forth.

Witness my hand ary, 1888.

this 16th day of Febru- FREDERICK HART.

Witnesses:

`ALBERT STQRY,

Guo. W. SEARLEs. 

